Program Listing for File ckksrns-leveledshe.h

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#ifndef LBCRYPTO_CRYPTO_CKKSRNS_LEVELEDSHE_H
#define LBCRYPTO_CRYPTO_CKKSRNS_LEVELEDSHE_H

#include "schemerns/rns-leveledshe.h"

#include <memory>
#include <string>
#include <map>
#include <vector>

namespace lbcrypto {

class LeveledSHECKKSRNS : public LeveledSHERNS {
public:
    virtual ~LeveledSHECKKSRNS() {}

    // SHE ADDITION

    using LeveledSHERNS::EvalAdd;
    using LeveledSHERNS::EvalAddInPlace;

    // SHE ADDITION PLAINTEXT

    // SHE ADDITION CONSTANT

    Ciphertext<DCRTPoly> EvalAdd(ConstCiphertext<DCRTPoly> ciphertext, double operand) const override;

    void EvalAddInPlace(Ciphertext<DCRTPoly>& ciphertext, double operand) const override;

    // SHE SUBTRACTION

    // SHE SUBTRACTION PLAINTEXT

    // SHE SUBTRACTION CONSTANT

    using LeveledSHERNS::EvalSub;
    using LeveledSHERNS::EvalSubInPlace;

    Ciphertext<DCRTPoly> EvalSub(ConstCiphertext<DCRTPoly> ciphertext, double operand) const override;

    void EvalSubInPlace(Ciphertext<DCRTPoly>& ciphertext, double operand) const override;

    // SHE MULTIPLICATION

    // SHE MULTIPLICATION PLAINTEXT

    // SHE MULTIPLICATION CONSTANT

    using LeveledSHEBase<DCRTPoly>::EvalMult;
    using LeveledSHEBase<DCRTPoly>::EvalMultInPlace;

    Ciphertext<DCRTPoly> EvalMult(ConstCiphertext<DCRTPoly> ciphertext, double operand) const override;

    void EvalMultInPlace(Ciphertext<DCRTPoly>& ciphertext, double operand) const override;

    Ciphertext<DCRTPoly> MultByInteger(ConstCiphertext<DCRTPoly> ciphertext, uint64_t integer) const override;

    void MultByIntegerInPlace(Ciphertext<DCRTPoly>& ciphertext, uint64_t integer) const override;

    // AUTOMORPHISM

    Ciphertext<DCRTPoly> EvalFastRotationExt(ConstCiphertext<DCRTPoly> ciphertext, usint index,
                                             const std::shared_ptr<std::vector<DCRTPoly>> digits, bool addFirst,
                                             const std::map<usint, EvalKey<DCRTPoly>>& evalKeys) const override;

    usint FindAutomorphismIndex(usint index, usint m) const override;

    // Mod Reduce

    void ModReduceInternalInPlace(Ciphertext<DCRTPoly>& ciphertext, size_t levels) const override;

    // Level Reduce

    void LevelReduceInternalInPlace(Ciphertext<DCRTPoly>& ciphertext, size_t levels) const override;

    // Compress

    // CKKS Core

    void EvalMultCoreInPlace(Ciphertext<DCRTPoly>& ciphertext, double operand) const;

    void AdjustLevelsAndDepthInPlace(Ciphertext<DCRTPoly>& ciphertext1,
                                     Ciphertext<DCRTPoly>& ciphertext2) const override;

    void AdjustLevelsAndDepthToOneInPlace(Ciphertext<DCRTPoly>& ciphertext1,
                                          Ciphertext<DCRTPoly>& ciphertext2) const override;

    std::vector<DCRTPoly::Integer> GetElementForEvalAddOrSub(ConstCiphertext<DCRTPoly> ciphertext,
                                                             double operand) const;

    std::vector<DCRTPoly::Integer> GetElementForEvalMult(ConstCiphertext<DCRTPoly> ciphertext, double operand) const;

    // SERIALIZATION

    template <class Archive>
    void save(Archive& ar) const {
        ar(cereal::base_class<LeveledSHERNS>(this));
    }

    template <class Archive>
    void load(Archive& ar) {
        ar(cereal::base_class<LeveledSHERNS>(this));
    }

    std::string SerializedObjectName() const {
        return "LeveledSHECKKSRNS";
    }
};

}  // namespace lbcrypto

#endif